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agentmail

Create and manage agent-owned email inboxes via the AgentMail MCP server.

Updated Jun 5, 2026
Search Tags:#automation#mcp#email#inbox#send email#agent identity#agentmail
One-click install
npx skills add https://github.com/xu1713/openhorse --skill agentmail-xu1713
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: agentmail
Source: https://github.com/xu1713/openhorse/tree/main/openhorse/openhorse/optional-skills/email/agentmail
Command: npx skills add https://github.com/xu1713/openhorse --skill agentmail-xu1713

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires agentmail-mcp, mcp.

What problem does it solve? Agents often need their own email identity to sign up for services, receive verification codes, or communicate with humans, but they cannot access a user's personal inbox. This Skill gives the agent a dedicated email address it fully controls for sending, receiving, and managing email autonomously. ## Core Features & Use Cases - Agent-Owned Inboxes: Create dedicated inboxes with real email addresses (e.g. [email protected]) through 11 MCP tools covering inbox, thread, and message management. - Full Email Operations: Send, reply to, and forward messages, list and read threads, update message labels, and download attachments. - Use Case: Register the agent for an online service using its own address, poll for the verification email with list_threads, and read the confirmation code with get_thread — all without touching the user's personal email. ## Quick Start Add the AgentMail MCP server with your API key to the Hermes config, restart, then ask the agent to create an inbox and send a test email.

Frequently Asked Questions about agentmail

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I give an AI agent its own email address?▼

Use the AgentMail MCP server to call create_inbox with a username, which returns a real address like [email protected]. The agent can then send, receive, and manage email from that inbox autonomously.

How do I set up the AgentMail MCP server with Hermes?▼

Add an mcp_servers entry in ~/.hermes/config.yaml with command npx, args -y agentmail-mcp, and your AGENTMAIL_API_KEY in env. Restart Hermes and all 11 AgentMail tools become available automatically.

Can AgentMail read my personal email inbox?▼

No, AgentMail only manages inboxes the agent creates and owns on the agentmail.to domain. For reading a user's personal email, use a separate tool such as himalaya or Gmail integration.

What are the limitations of the AgentMail free tier?▼

The free tier allows 3 inboxes and 3,000 emails per month, and addresses use the @agentmail.to domain. Custom domains require a paid plan starting at $20 per month.

Does AgentMail support real-time inbound email notifications?▼

Real-time inbound email requires webhooks pointed at a public server. For personal use, poll periodically with list_threads via a cronjob instead of running a webhook endpoint.

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